Ryuki Engineering will be exhibiting at the "2024 NEW Environmental Exhibition" held at Tokyo Big Sight from May 22 (Wednesday) to May 24 (Friday), 2024. -------------------------------------------------- We will once again have a booth designed with a café concept. We look forward to your visit. -------------------------------------------------- Exhibition: 2024 NEW Environmental Exhibition Date and Time: May 22 (Wednesday) to May 24 (Friday), 2024, 10:00 AM to 5:00 PM (until 4:00 PM on the last day) Exhibition Location: Tokyo Big Sight, East Hall 6, Booth Number: S629 Exhibition Theme: "The Optimal Solution for PFAS Treatment" - Effective purification technology with low cost and low impact We will introduce the innovative technology "ECO Clean LFP" that removes organic fluorinated compounds "PFAS" in a low-cost and environmentally friendly manner. By purifying with a filter that tightly adheres powdered activated carbon, PFAS is efficiently removed. You can see this process at our experimental seminar.

The Ichihara Techno Center of Ryuki Engineering will be reborn. The new name will be 'Ryuki_Lab.' Completion is scheduled for autumn 2024. It will become the center of our research and development. The new facility will be expanded to approximately 1,126 square meters, boasting three times the current size. This expansion aims to accelerate innovations that address global environmental challenges, seeking to create solutions for a sustainable future through improved efficiency in research testing and further enhancement of technological development capabilities. ----------------------------------------------- Facility Name: Ryuki_Lab. Address: 2-15-4 Aoyagi, Ichihara City, Chiba Prefecture (relocation) Site Area: Approximately 1,126 square meters Total Floor Area: Approximately 1,399 square meters Scheduled Completion: Autumn 2024 -----------------------------------------------

【May 24 (Wed) - 26 (Fri), 2023 at Tokyo Big Sight】 The exhibition aims to raise awareness of environmental conservation by showcasing various technologies and services that address environmental issues, with the goal of stabilizing national life and promoting the development of the environmental industry. Our company will exhibit water treatment equipment, including "filtration devices," as an environmental solution and engineering manufacturer, and we will also unveil new products. 【Exhibition Overview】 2023 NEW Environmental Exhibition Date: May 24 (Wed) - 26 (Fri), 2023 Time: 10:00 AM - 5:00 PM (last day until 4:00 PM) Location: Tokyo Big Sight, East Hall Our Booth: East Hall 4, Booth D418 =============== This time, we will present a demonstration of water treatment equipment, including the latest technology "ECO Clean LFP," inspired by the concept of a "Neo Pure Café." Additionally, we will demonstrate high-precision filtration technology using functional powders and filters in a seminar format, allowing attendees to experience environmental solution technologies firsthand. We look forward to your visit.

Our company will exhibit at the International Powder Technology Exhibition Tokyo 2022, which will be held from December 7 (Wednesday) to December 9 (Friday) at Tokyo Big Sight. This exhibition is a comprehensive showcase of the latest information on powder technology, focusing on powder equipment and devices. As an environmental solutions and engineering manufacturer, we will display water treatment devices, including our "filtration equipment," and unveil new products. 【Exhibition Overview】 International Powder Technology Exhibition Tokyo 2022 Date: December 7 (Wednesday) to December 9 (Friday), 10:00 AM to 5:00 PM Location: Tokyo Big Sight, East Hall Our Booth: East Hall 3, Booth 3J-12

We are pleased to announce that our company will be featured in the NHK overseas content program "NHK WORLD" titled "Japan’s Top Inventions." In the latter half of the program, there will be a segment introducing "products that hold a top share in niche fields," where we will be featured with the theme of "dust collectors for tunnel construction that protect the safety of workers on job sites around the world." *The broadcast will include English subtitles and narration. Program Overview NHK WORLD "Japan’s Top Inventions" (Broadcast on NHK World TV in approximately 160 countries and regions) Initial Broadcast Date and Time - November 26, 2022 (Saturday) 14:10 - 14:40 Rebroadcasts - November 27 (Sunday) 23:10 - 23:40 - November 28 (Monday) 7:10 - 7:40 - December 2 (Friday) 4:00 - 4:30 How to Watch Internet Smartphone app "NHK WORLD," CS channels, etc.

We will be exhibiting at the 15th Kawasaki International Environmental Technology Exhibition, which will be held at Caltz Kawasaki from November 17 (Thursday) to November 18 (Friday). The exhibition will showcase a wide range of environmental technologies, from those that respond to domestic and international environmental issues to cutting-edge technologies aimed at solving global environmental problems. It serves as a platform to communicate from Kawasaki to both domestic and international audiences, as well as a venue for business matching between exhibiting companies and organizations and businesses from around the world. As an environmental solutions and engineering manufacturer, we will display water treatment equipment, including "filtration systems," and unveil new products. 【Exhibition Overview】 15th Kawasaki International Environmental Technology Exhibition Dates: November 17 (Thursday) to November 18 (Friday), 2022, from 10:00 AM to 5:00 PM Venue: Caltz Kawasaki, 1-1-4 Fujimi, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Our Booth Number: A-09 Official Website: https://www.kawasaki-eco-tech.jp/

Our company will be exhibiting at the 2022 NEW Environmental Exhibition held at Tokyo Big Sight from May 25 (Wednesday) to May 27 (Friday). As an environmental solution and engineering manufacturer, we will have booths in "Area 2"! Exhibit 1: Water Treatment Equipment Booth (East Hall 4, Booth N405) We will showcase water treatment equipment, including "filtration systems," and unveil new products! Exhibit 2: Disaster Waste and Recovery/Reconstruction Measures Booth (East Hall 3, Booth G300) In collaboration with Entex Co., Ltd., we will debut the "Disaster Mixed Soil Separation System" (DIMS), aimed at rapid disaster recovery (reconstruction)! Pre-registration for entry is here! https://nexpoinv.jp/ 【2022 NEW Environmental Exhibition Overview】 Dates: May 25 (Wednesday) to May 27 (Friday) Hours: 10:00 AM to 5:00 PM (until 4:00 PM on the last day) Venue: Tokyo Big Sight East Exhibition Hall Our booth numbers: Exhibit 1: Water Treatment Equipment Booth (East Hall 4, Booth N405) Exhibit 2: Disaster Waste and Recovery/Reconstruction Measures Booth (East Hall 3, Booth G300) *Please note that the content of the two booths is different, so be careful when you visit.

【★☆New Catalog Information Released!★☆】 Contributing to the recycling of waste plastics! Total support for wastewater treatment, dust, and odor control. With the enforcement of the Plastic Resource Circulation Promotion Act starting in April 2022, businesses are required to actively engage in the recycling of plastics. Leveraging our track record in environmental improvement projects, we provide comprehensive support from planning, design, manufacturing, installation, to after-sales support for companies looking to engage in the collection and recycling of used plastics. For more details, please see the "Related Links" below! Feel free to contact us for more information.

【★☆New Product Information Released!★☆】 Exhibiting at the 2022 New Environmental Exhibition! New Product ECO Clean Mini 【Recycling and Reusing Small-Scale Wastewater!】Handles 10m3 per day! High-spec low-cost solution for the costly area of "filtration"! Water treatment equipment for small-scale businesses. For more details, please see the "Related Links" below! Feel free to contact us for more information.

【★☆New Product Information Released!★☆】 Disaster Debris Mixed Soil Separation System for Local Governments "DIMS" The Disaster Debris Mixed Soil Separation System "DIMS" is a system that can recycle mixed waste and high-water-content soil, which are major obstacles to disaster recovery, by separating soil, combustible materials, non-combustible materials, and metal fragments into reusable resources. For more details, please refer to the "Related Links" below! Feel free to contact us for more information.

Ryuki Engineering is currently holding a virtual exhibition! We are showcasing water treatment equipment, including filtration systems! New products and technologies are also being revealed! The booth from the recently held "INCHEMTOKYO2021" has been recreated, allowing you to enjoy the atmosphere of a real exhibition. This is a must-see for those who couldn't attend "INCHEMTOKYO2021"! You can watch product videos, download catalogs, and make inquiries through the link page. Please visit our booth online! ^^ *To prevent character garbling, please turn off your browser's automatic translation feature.

A digital broadcasting station for engineers involved in manufacturing and research and development, 'Aperza TV' (operated by Aperza Inc.) is currently hosting a webinar. This time, we are discussing the theme, "Challenging Zero Wastewater! Can Water Recycling Technology Reduce Water Supply and Sewerage Costs by 90%?!" The speaker is Hitoshi Yamauchi from our Development Department, who writes the environmental column "The Complete Map of All Nations" featured on our company website. Aperza TV is available for free viewing, so please check it out at the URL below! https://tv.aperza.com/watch/215 *Please note that it cannot be viewed on Internet Explorer (please use Microsoft Edge or Chrome). □ Overview In recent times, companies are being questioned about their responses to environmental issues, and "wastewater treatment" has become a challenge for many factories. Manufacturer Ryuki Engineering is solving the challenges of factory wastewater with the latest technology of "membrane + powder," significantly reducing the costs of water supply and sewerage while achieving the previously difficult task of water recycling. This technology contributes to the achievement of the SDGs.

Winter Vacation: December 29, 2021 (Wednesday) to January 3, 2022 (Monday) We sincerely apologize for the inconvenience, but we will be taking winter vacation during the above period. Any inquiries made during the vacation period will be responded to after January 4, 2022 (Tuesday). Thank you for your understanding.

Our company will be exhibiting at the "Water Treatment Solutions for Industry (Water Innovation)" within INCHEM TOKYO 2021, which will be held at Tokyo Big Sight from November 17 (Wednesday) to November 19 (Friday). This exhibition is a specialized event for water treatment technology aimed at promoting water treatment products and technologies for the realization of environmentally friendly manufacturing processes. As an environmental solutions and engineering manufacturer, we will showcase water treatment equipment, including our filtration systems, and unveil new products. 【Exhibition Overview】 INCHEM TOKYO 2021 Water Treatment Solutions for Industry (Water Innovation) Dates: November 17 (Wednesday) to 19 (Friday), 2021, 10:00 AM to 5:00 PM Venue: Tokyo Big Sight South Exhibition Hall Our booth number: S1-CO3 Visitor registration is now open! Please register using the link below.

We are pleased to announce the "Ryuki Online Exhibition 2020" hosted by our company. <<Access here!>> https://onlineexpo.world/ryuki/ Date: November 24 (Tuesday) to 27 (Friday) - Special product videos will be released! - Solve problems on the spot! Chat function - Downloadable materials - Business negotiations are also possible! New products will be unveiled! 【New Product 1】 Disaster and Emergency Water Purification Device - Purifies water drawn from rivers, irrigation channels, ponds, and pools (assuming raw water turbidity of 3000mg/l) for use as domestic water, showers, and high-pressure cleaning. - Filters and clarifies water, capable of purifying 540 liters per hour! Shower usage at 9 liters/min (usable for 60 minutes). 【New Product 2】 Virus Inactivation Portable Ventilation Equipment "Moterun desu." - Addresses the challenges of hand-carry dust collectors by achieving a balance between processing air volume and cleanliness. - Collects sub-micron particles with a high-cleanliness filter similar to HEPA, and incorporates an ozone generation device for virus inactivation. - The industry’s largest processing air volume for hand-carry models (30m³/min). We look forward to your visit.

Our company will be exhibiting at the "International Powder Technology Exhibition Tokyo 2020" held at Tokyo Big Sight. Exhibition Name: International Powder Technology Exhibition Tokyo 2020 Date: November 18 (Wednesday) - 20 (Friday) 9:30 AM - 5:00 PM Venue: Tokyo Big Sight, South Exhibition Hall Our Booth Number: U-06 Pre-registration for visitors can be done here >> https://www.powtex.com/tokyo/visit/index.php?CD=PMZGR At the venue, we will showcase our advanced powder material dewatering and drying equipment "Daku Dry," the MF turbidity treatment device "ECO Clean," and the ozone microbubble "O Micron III." ★ New product debut ★ Virus inactivation portable ventilation system "Moterun desu." - Achieves a balance between processing air volume and cleanliness, which was a challenge for hand-carry dust collectors. - Collects sub-micron particles with a high cleanliness filter comparable to HEPA, and incorporates an ozone generator for virus inactivation. - Filter replacement is as simple as wrapping it around the main unit. - The industry’s largest processing air volume for hand-carry type (30 m³/min).

In response to the government's lifting of the "state of emergency," we will implement the following measures: 1. Business Hours As usual, from 9 AM to 6 PM. 2. Attendance Method - Normal attendance from June 1. - Some employees, such as those caring for children or who are pregnant, may work from home or have reduced hours. 3. Main Initiatives for Infection Prevention and Control - Daily temperature checks and recording of contacts will be conducted. - Employees with symptoms such as a fever of 37.5°C or higher, fatigue, cough, or changes in taste or smell should stay home. - Thorough handwashing and disinfection upon entering the office. 4. Shipping Due to the circumstances of the transportation companies, there may be changes or delays in delivery dates and times. We apologize for any inconvenience this may cause and appreciate your understanding of the current situation.

We sincerely apologize for the inconvenience, but we have made changes to our business operations as outlined below, and we appreciate your understanding. 1. Business Hours As before, 9 AM to 6 PM 2. Attendance Method - Partial remote work for all departments (currently in effect) - Shift work (currently in effect) 3. Implementation Period From March 2, 2020, to May 10, 2020 (Will be automatically updated based on situation assessment) 4. Shipping Cut-off Time Due to the circumstances of the shipping company, there may be changes or delays in delivery dates and times.

Winter Vacation: December 28, 2019 (Saturday) to January 5, 2020 (Sunday) We sincerely apologize for any inconvenience, but we will be taking our winter vacation during the above period. For inquiries during the vacation period, we will respond after January 6 (Monday). Thank you for your understanding.

We sincerely apologize for the inconvenience, but we will be taking our winter holiday during the following period: December 29 (Saturday) to January 3 (Thursday). Please note that any inquiries made during the holiday period will be responded to after January 4 (Thursday). Thank you for your understanding.

Ryuuki Engineering Co., Ltd. will be exhibiting at the International Powder Technology Exhibition Tokyo 2018, held at Tokyo Big Sight. We will showcase our dewatering and drying equipment "Pleats Dryer," ozone microbubbles "O Micron III," and water recycling treatment system "ECO Clean." [Booth Number] East Hall 3 / P-14 We sincerely look forward to your visit.

Thank you for consulting with us about wastewater treatment at the 2017 New Environmental Exhibition the other day. We would like to participate in your company's efforts towards "problem-solving." We have introduced our exhibited products on our company website. http://www.ryuki.com/original/water_treatment/index.html When making inquiries, we would appreciate it if you could fill out the attached sheets: - Water Treatment Equipment Introduction Hearing Sheet - Water Treatment Equipment Sample Test Request Sheet If you have any questions, please do not hesitate to let us know. We are also looking forward to your inquiries via email or our toll-free number. Email address: eigyobu@ryuki.com Toll-free number: 0120-449-881 We look forward to your continued support.

Ryuki Engineering Co., Ltd. will hold the "Ryuki Engineering 5.24 Declaration" to announce its efforts to improve safety. On that day, we will report on the safety initiatives and safety guidelines we have implemented over the past year. Date and Time: May 24, 11:45 AM to 1:45 PM Venue: Yuzawa Toei Hotel

As stated in the title, we will hold an inauguration ceremony. Date and Time: February 6, 2015, from 11:00 AM to 2:00 PM Venue: The Prince Sakura Tower Tokyo, 2nd Floor http://www.princehotels.co.jp/sakuratower/access/ ≪Contact Information for Inquiries≫ Person in Charge: Sawame from the Construction Sales Department / Kaito from the Management Department Phone: 0120-449-881 (Toll-Free)

Dear Sir/Madam, I hope this message finds you in good health and spirits as we approach the end of the year. I would like to inform you that there have been changes to our company's executives as detailed below. Moving forward, all of our employees are committed to putting forth even greater efforts for the development of our business, and we kindly ask for your continued support and patronage. Please accept this letter as a formal greeting. Sincerely, Details: Chairman of the Board: (New) Akira Nishimura President and CEO: (New) Tsukasa Nishimura (Formerly Akira Nishimura) End of message.